TOKYO — Hyundai and Kia are rolling out an engine system that boosts power and fuel economy, extending fresh life to traditional internal combustion in the age of electrification. The new approach ...

Hyundai claims it has created the world's first Continuously Variable Valve Duration (CVVD) engine technology, which it says increases engine performance by 4 percent and efficiency by 5 percent. The ...

Set to debut in a new 1.6-liter 4-cylinder Smartstream turbo engine, Hyundai's new valve tech is able to continuously change the duration of valve openings to suit driving conditions, which Hyundai ...

Set to be launched with the new Sonata sedan later this year, the CVVD system forms part of the company’s ‘Smart Stream’ engine and transmission family, which aim to optimise both performance and fuel ...

Even as electric cars become more common, automakers are still trying to squeeze more efficiency out of internal-combustion engines. That’s led to more complex solutions to the age old task of mixing ...

Hyundai recently introduced a new piece of engine tech into its lineup called Continuously Variable Valve Duration (CVVD). Similar to variable valve timing or variable valve lift, it physically alters ...

Cars are Andrew's jam, as is strawberry. After spending years as a regular ol' car fanatic, he started working his way through the echelons of the automotive industry, starting out as social-media ...

Altering the length of time that a valve stays open is way trickier than changing when it begins its open-and-close cycle or how much it lifts. To achieve variable duration, Hyundai has basically had ...

Hyundai Motor Group has announced the development of the world’s first Continuously Variable Valve Duration (CVVD) technology which will feature in future Hyundai and Kia vehicles. The innovation was ...